卡波西的肉瘤相关性疹病毒中的病毒圆形RNA在潜伏和临床复制过程中调节病毒和宿主基因表达
Soleil Torres1, Vaibhav Jain1, Daniel Stribling1,2
1Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32601, USA.
Exploration of targeted anti-tumor therapy
|June 2, 2025
概括
卡波西的肉瘤相关性疹病毒 (KSHV) 在没有正规拼接位时产生替代的循环RNA (circRNAs). 这些病毒circRNAs在KSHV感染期间调节宿主和病毒基因表达.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 循环RNAs (circRNAs) 是由背接形成的非编码RNA.
- 病毒编码的circRNAs,包括来自卡波西肉瘤相关性疹病毒 (KSHV) 的 circRNAs,都与疾病有关.
- 在延迟和重新激活期间,KSHV vIRF4区域产生circRNAs (circ-vIRF4).
研究的目的:
- 描述KSHV中的vIRF4环RNAs的功能.
- 研究circ-vIRF4在KSHV相关的恶性瘤中的作用.
主要方法:
- 在BAC16中产生了一个KSHV突变 (Δcirc-vIRF4).
- 使用RT-PCR和测序评估circRNA表达.
- 在受感染的iSLK细胞中通过RNA-seq分析宿主和病毒基因表达.
主要成果:
- 在没有WT异型的情况下,KSHV使用替代的背位产生了新的vIRF4环RNA.
- RNA-seq揭示了宿主和病毒基因在延迟和重新激活期间的显著差异表达.
- 基因本体学分析表明,它参与了细胞粘附,增殖,迁移,酶信号传递和亡.
结论:
- 当 kanonical sites 缺失时,KSHV 使用了替代的背接位点来进行 vIRF4 circRNA 生产.
- circ-vIRF4通过未明确的机制在调节宿主和病毒基因表达方面发挥作用.
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